656225313 has 16 divisors (see below), whose sum is σ = 932582016. Its totient is φ = 409017600.

The previous prime is 656225299. The next prime is 656225333. The reversal of 656225313 is 313522656.

It is not a de Polignac number, because 656225313 - 2⁵ = 656225281 is a prime.

It is a super-2 number, since 2×656225313² = 861263322843895938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (656225333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34906 + ... + 50307.

It is an arithmetic number, because the mean of its divisors is an integer number (58286376).

Almost surely, 2^656225313 is an apocalyptic number.

It is an amenable number.

656225313 is a deficient number, since it is larger than the sum of its proper divisors (276356703).

656225313 is a wasteful number, since it uses less digits than its factorization.

656225313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85384.

The product of its digits is 32400, while the sum is 33.

The square root of 656225313 is about 25616.8950694654. The cubic root of 656225313 is about 868.9957642380.

Adding to 656225313 its reverse (313522656), we get a palindrome (969747969).

The spelling of 656225313 in words is "six hundred fifty-six million, two hundred twenty-five thousand, three hundred thirteen".